Flashcard - Electrons Conf of Ions(2024-2025)

Front

What is electron configuration?

Back

The distribution of electrons in an atom's orbitals, indicating how many electrons occupy each energy level and sublevel.

Front

What is the electron configuration for an atom with 15 electrons?

Back

1s² 2s² 2p⁶ 3s² 3p³.

Front

What does isoelectric mean?

Back

Having the same number of electrons or the same electron configuration as another atom or ion.

Front

Which ion is isoelectric with Argon?

Back

Sulfide ion (S²⁻) is isoelectric with Argon.

Front

What happens to an atom when it loses an electron?

Back

It becomes a positively charged ion (cation).

Front

What is the charge of an atom that has gained two electrons?

Back

+2.

Front

What is the electron configuration for an oxide ion (O²⁻)?

Back

1s² 2s² 2p⁶.

Front

Why do atoms form ions?

Back

Atoms form ions to achieve a full valence shell, which increases their stability.

Front

What is a cation?

Back

A positively charged ion formed when an atom loses one or more electrons.

Front

What is an anion?

Back

A negatively charged ion formed when an atom gains one or more electrons.